Electrode for secondary galvanic cells.



H. P. R. L. PURSGKE & J. A. E. ACHENBAOH.

ELECTRODE FOR SECONDARY GALVANIG CELLS.

APPLICATION FILED MAY 1, 1911.

2 1 9 1 9 m J d .w n m a P.

257567 litazade HEmE-IGH PAUL RUDOLF LUDWIG PfiRSCKE AND JULIUS ADOLPH ERWIN ACHENBACH, OF HAMBURG, GERMANY.

ELECTRODE FOR SECONDARY GALVANIC CELLS.

Specification of Letters Patent.

Application filed May 1, 1911. Serial No. 624,358.

ful Improvement in. Electrodes for Secondary Galvanic Cellsg of which the following is a specification.

In the specification filed with our copending application Serial No. 622,644 we have described the method of manufacturing elecf trodes for secondary cells by pasting the active mass into the interstices of a finemeshed metal fabric, the latter being then wound upon a support to form a roller- I shaped body, which 1s fixed into a frame.

The present invention consists in a modificatlon of this method, which will now be described with reference to the accompany ing drawing.

Inthe drawing, Figures 1,2 and 3 are perspective elevations illustrating three success1ve stages in the process of manufacture.

According to this invention he metal fabric a, with minute scales of ac 1ve mass 12 in the interstices thereof, is bent into an undulating or corrugated shape, as shown in Fig. 1, and the folds thereof are then pressed closely together, as shown in Fig. 2, so asto form a kind of porous metal cake, the active Patented July 9, 1912.

mass being in the pores. This cake is thereupon placed in a metal frameit'may be forced by pressure.-

What we claim as our invention and desire to secure by Letters Patent of the United States is An electrode for an alkaline secondary galvanic cell consisting of a piece of fine meshed metal fabric, a thin coating of active mass pasted onsaid fabric, said fabric being corrugated and compressed to form a porous 0, into which cake wherein the active-mass is contained in minute cells formed by the interstices of the fallgric, and a metal frame inclosing said ca e.

In witness whereof we have signed this specification in the presence of two witnesses. i HEINRICH PAUL RUDOLF LUDWIG PGRSCKE.

JULIUS ADOLPH ERWIN AGHENBACH. Witnesses:

ERNST H. L. MUMMENHOF, EDUARD Horn. 

